Mask

Abstract

A mask includes a body, a length adjustment member and a self-adaptive member. The body has an upper edge. The length adjustment member and the self-adaptive member are provided at the upper edge of the body. The self-adaptive member is provided at an inner side of the length adjustment member. The length adjustment member is bendable along a curve of a face and is able to act on the self-adaptive member, such that the self-adaptive member is deformed by force and adapted to the curve of the face to fit on the face.

1 . A mask, comprising:
 a body having an upper edge;   a length adjustment member provided at the upper edge of the body; and   a self-adaptive member provided at the upper edge of the body and arranged at an inner side of the length adjustment member,   wherein the length adjustment member is bendable along a curve of a face and is able to act on the self-adaptive member, so that the self-adaptive member is deformed by force and adapted to the curve of the face to fit on the face.   
     
     
         2 . The mask according to  claim 1 , wherein the self-adaptive member comprises a first self-adaptive fixing region, a second self-adaptive fixing region, and a self-adaptive region located between the first self-adaptive fixing region and the second self-adaptive fixing region, the length adjustment member is used to adjust a distance between the first self-adaptive fixing region and the second self-adaptive fixing region, so that the self-adaptive region forms an arc shape suitable for the face. 
     
     
         3 . The mask according to  claim 2 , wherein the self-adaptive region is bendable to change between a first position where the self-adaptive region is flat and straight, and a second position where the self-adaptive region is substantially W-shaped and comprises a first arc-shaped segment, a second arc-shaped segment, and an arc-shaped connecting portion connecting the first arc-shaped segment and the second arc-shaped segment, both the first arc-shaped segment and the second arc-shaped segment protrude towards an inner side of the body, the arc-shaped connecting portion protrudes towards an outer side of the body. 
     
     
         4 . The mask according to  claim 2 , wherein a thickness of the self-adaptive region is less than a thickness of the first self-adaptive fixing region, and the thickness of the self-adaptive region is less than a thickness of the second self-adaptive fixing region. 
     
     
         5 . The mask according to  claim 3 , wherein a thickness of the first arc-shaped segment gradually increases from a middle to both sides of the first arc-shaped segment, a thickness of the second arc-shaped segment gradually increases from a middle to both sides of the second arc-shaped segment, and a thickness of the arc-shaped connecting portion gradually increases from a middle to both sides of the arc-shaped connecting portion. 
     
     
         6 . The mask according to  claim 2 , wherein a width of the self-adaptive region is less than a width of the first self-adaptive fixing region, and the width of the self-adaptive region is less than a width of the second self-adaptive fixing region. 
     
     
         7 . The mask according to  claim 3 , wherein a width of the first arc-shaped segment gradually increases from a middle to both sides of the first arc-shaped segment, a width of the second arc-shaped segment gradually increases from a middle to both sides of the second arc-shaped segment, and a width of the arc-shaped connecting portion gradually increases from a middle to both sides of the arc-shaped connecting portion. 
     
     
         8 . The mask according to  claim 3 , wherein the first arc-shaped segment, the second arc-shaped segment and the arc-shaped connecting portion each define a through-hole. 
     
     
         9 . The mask according to  claim 8 , wherein cross-section areas of the through-holes of the first arc-shaped segment gradually decrease from a middle to both sides of the first arc-shaped segment, cross-section areas of the through-holes of the second arc-shaped segment gradually decrease from a middle to both sides of the second arc-shaped segment, and cross-section areas of the through-holes of the arc-shaped connecting portion gradually decrease from a middle to both sides of the arc-shaped connecting portion. 
     
     
         10 . The mask according to  claim 1 , wherein a material of the self-adaptive member is a temperature change material. 
     
     
         11 . The mask according to  claim 1 , wherein the length adjustment member is an adjustment belt or a sleeve, a material of the adjustment belt or the sleeve is an elastic material, or the material of the adjustment belt or the sleeve is flexible material. 
     
     
         12 . The mask according to  claim 1 , wherein the self-adaptive member is a deformable sheet. 
     
     
         13 . The mask according to  claim 3 , wherein the arc-shaped connecting portion defines a first middle hole and a second middle hole, the first self-adaptive fixing region defines a first left hole and a second left hole, the second self-adaptive fixing region defines a first right hole and a second right hole, the length adjustment member passes sequentially through the first left hole, the second left hole, the first middle hole, the second middle hole, the first right hole, and the second right hole. 
     
     
         14 . The mask according to  claim 12 , wherein the deformable sheet has a central protruding portion, a left middle protruding portion, and a right middle protruding portion that protrude downward, the central protruding portion protrudes downward and is located at a center of the deformable sheet; the left middle protruding portion protrudes downward, and is located at a left side of the central protruding portion and spaced apart from the central protruding portion; and the right middle protruding portion protrudes downward, and is located at a right side of the central protruding portion and spaced apart from the central protruding portion. 
     
     
         15 . The mask according to  claim 14 , wherein the central protruding portion is substantially rectangular, each of the left middle protruding portion and the right middle protruding portion gradually becomes narrower from top to bottom and has an arc-shaped lower edge. 
     
     
         16 . The mask according to  claim 14 , wherein a width of the deformable sheet in an up-down direction gradually increases from the left middle protruding portion towards a left end of the deformable sheet and gradually increases from the right middle protruding portion towards a right end of the deformable sheet. 
     
     
         17 . The mask according to  claim 10 , wherein the temperature change material is made of one or more of polynorbornene, trans-polyisoprene, polyurethane, styrene-butadiene copolymer, polyolefin, polycaprolactone, and polyamide. 
     
     
         18 . The mask according to  claim 1 , wherein a material of the length adjustment member comprises aluminum. 
     
     
         19 . The mask according to  claim 12 , wherein the deformable sheet is an independent structure arranged between the body and the length adjustment member. 
     
     
         20 . The mask according to  claim 12 , wherein the deformable sheet is directly used as the upper edge of the body.